Cold-resistant warm composite wool fabric and manufacturing process thereof

Abstract

The application discloses an anti-cold and warm composite wool fabric and a manufacturing process thereof, and belongs to the technical field of fabric weaving. The front surface of the fabric is made of polyester yarn, the middle part is made of wool yarn, and the inner part is made of nylon spandex core yarn. The fabric is knitted by using a specific single-jersey machine structure. The manufacturing process further comprises dipping and padding treatment of the fabric gray cloth in a special treatment liquid. Compared with the prior art, the fabric has excellent anti-cold and warm properties, wear resistance and anti-static property, and is suitable for manufacturing various winter clothes.

Description

Technical Field

[0001] This invention relates to the field of fabric weaving technology, and in particular to a cold-resistant and warm composite wool fabric and its manufacturing process. Background Technology

[0002] With the fast pace of modern life and technological advancements, people's demands for clothing are no longer limited to basic covering and aesthetics; they increasingly seek functionality and comfort. Especially in cold climates, people have higher requirements for the warmth retention of clothing. Furthermore, with increasing health awareness, antibacterial and antistatic properties have also become important factors to consider in clothing design.

[0003] In the field of fabric weaving technology, while traditional wool fabrics offer excellent warmth, they perform poorly in terms of antistatic and abrasion resistance. Furthermore, due to the high hygroscopicity of wool fibers, their antibacterial properties are also less than ideal, limiting the competitiveness of traditional wool fabrics in the modern functional fabric market. While some existing improved wool fabrics on the market have enhanced warmth and comfort to some extent, their overall performance in areas such as cold resistance, antibacterial properties, and antistatic properties still needs improvement.

[0004] Chinese invention patent CN118203164A discloses a method for preparing a rain jacket made of anti-pilling fabric. After electrospinning an acrylonitrile spinning precursor solution, the spun material is sprayed onto a flat plate with depressions, forming small protrusions. Acrylic fibers with these protrusions are spun with polyester and silver fibers, and then woven with wool yarn. The resulting fabric undergoes singeing and chitosan / siloxane surface treatment before being bonded to the outer layer of the rain jacket to obtain an anti-pilling rain jacket. The small protrusions on the acrylic fibers provide air-accommodating space and can wrap around the wool fibers, providing air insulation and increasing the fabric's density, thus improving its anti-pilling and warmth retention capabilities. Polyester fibers are used as the core yarn, with acrylic and silver fibers alternately arranged on the polyester fiber surface as outer fibers, reducing fiber friction and entanglement, increasing fabric density, and improving fabric strength. However, the rain jacket prepared by this invention has poor antistatic properties and insufficient abrasion resistance. Summary of the Invention

[0005] To address the aforementioned problems, this invention aims to provide a novel cold-resistant and warm composite wool fabric and its manufacturing process. Through innovative fabric structure design and special post-processing, this fabric not only improves its warmth retention but also achieves excellent abrasion resistance and antistatic properties.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] The manufacturing process of a cold-resistant and warm composite wool fabric is as follows:

[0008] Step 1: The front of the fabric is made of polyester yarn, the middle is wool yarn, and the inside is nylon-spandex core-spun yarn. The fabric is knitted on a single-jersey knitting machine with a cylinder diameter of 13-20 inches, a needle pitch of 28 stitches per inch, and 8 rows of feed lines. It is knitted on a seamless knitting machine with self-locking seams at the top and bottom. During knitting, there is a cycle of 8 rows, with two types of yarn in each row. Rows 1, 3, 5, and 7 are made of polyester yarn + nylon-spandex core-spun yarn, while rows 2, 4, 6, and 8 are made of wool yarn + nylon-spandex core-spun yarn. Rows 2 and 6 are made of 180-240D spandex for the waistband. The fabric is then woven into a greige fabric.

[0009] Step 2: Immerse the fabric prepared in Step 1 in the treatment solution. After immersion, roll the fabric for further treatment. After treatment, dry it at 35~45℃ to obtain a cold-resistant and warm composite wool fabric.

[0010] The wool yarn has a specification of 80~90 / 1Nm, and the average diameter of the wool fibers in the wool yarn is 15~18μm.

[0011] The weight ratio of the polyester yarn, wool yarn, nylon-spandex core-spun yarn, and 180-240D spandex for waist circumference is 2-4:2-4:3-5:0.4-0.6.

[0012] The nylon-spandex core-spun yarn is nylon short fibers covering 15~25D spandex, and the weight ratio of the nylon short fibers to the spandex is 6~8:2~4.

[0013] The impregnation process involves immersing the fabric prepared in step 1 in a treatment solution at a bath ratio of 1:20~40g / mL at 35~45℃ for 60~80 minutes.

[0014] The padding process involves padding the fabric at 40-60°C and 1-3 MPa for 3-8 minutes.

[0015] The composite wool fabric has a weight of 280~320g / m². 2 .

[0016] The preparation method of the treatment solution is as follows, in parts by weight:

[0017] S1. Mix 3-5 parts of hyperbranched polyester H30 with 150-250 parts of ethyl acetate and stir for 20-40 minutes. Then add 15-25 parts of sodium hydroxide and continue stirring for 5-10 minutes. After that, add 40-60 parts of epoxy compound dropwise and treat at 40-60°C for 10-30 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent.

[0018] S2. Mix 80-120 parts of ammonium salt, the treatment agent prepared in step S1, 30-50 parts of 2,3,3',4'-biphenyltetracarboxylic dianhydride, and 200-400 parts of ethyl acetate at 80-120°C for 4-6 hours. Then, add a treatment solution, which is 3-5 parts of vinyltris(2-methoxyethoxy)silane, 1-3 parts of silicon dioxide, and 1-3 parts of titanium dioxide, into 80-120 parts of a 65-75 wt% ethanol aqueous solution and treat at 60-80°C for 1-3 hours. Continue stirring for 0.5-2 hours to finally obtain the modified solution.

[0019] The epoxy compound is at least one of 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)ethylene oxide, 2-[[3-(chlorodimethylsilyl)propoxy]methyl]ethylene oxide, 2-(dichloromethyl)ethylene oxide, and methyl epichlorohydrin; the ammonium salt is at least one of benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride, benzyl ethyltrimethyl ammonium chloride, and 3-phenoxybenzyltriethylammonium.

[0020] The functions of each substance described in this invention are as follows:

[0021] Polyester yarn, used as the material on the front side of the fabric, provides the fabric with the required strength and abrasion resistance, while maintaining the fabric's stability and shape.

[0022] Wool yarn is located in the middle layer of the fabric, providing warmth and softness, increasing the fabric's comfort and insulation.

[0023] Nylon-spandex core-spun yarn, used as the inner layer material of the fabric, provides elasticity and resilience, improving the fabric's elasticity and comfort.

[0024] 180~240D spandex is used in the waistband of the fabric to provide extra elasticity and comfort.

[0025] Hyperbranched polyester H30, as the main component of the treatment solution, helps to form a protective layer on the fiber surface, improving the fabric's abrasion resistance and antistatic properties.

[0026] Ethyl acetate is used as a solvent to dissolve and disperse other components, which helps in the preparation of the treatment solution.

[0027] Sodium hydroxide acts as a catalyst, accelerating the reaction process and aiding in the reaction and cross-linking of other components in the treatment solution.

[0028] 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)ethylene oxide, as a crosslinking agent in the treatment liquid, helps to improve the abrasion resistance and antistatic properties of the fabric.

[0029] Benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride helps to distribute the treatment solution evenly on the fabric surface.

[0030] 2,3,3',4'-Biphenyltetracarboxylic dianhydride acts as a crosslinking agent, enhancing the bonding force between fibers in the fabric and improving the fabric's stability and abrasion resistance.

[0031] Vinyltris(2-methoxyethoxy)silane, as a component of the treatment solution, helps to improve the abrasion resistance and antistatic properties of the fabric.

[0032] Silica, as a filler in the treatment solution, increases the fabric's abrasion resistance and antistatic properties.

[0033] Titanium dioxide, as a component of the treatment solution, may be used to improve the UV resistance and antistatic properties of fabrics.

[0034] Ethanol aqueous solution, as a solvent for the treatment solution, helps to dissolve and disperse other components, facilitating the preparation and application of the treatment solution.

[0035] The combination and interaction of these substances give the composite wool fabric of the present invention excellent cold resistance, warmth retention, abrasion resistance and antistatic properties.

[0036] Compared with existing technologies, it has the following advantages:

[0037] 1) This invention achieves superior antistatic effects through specific fabric structure design and the preparation of the post-treatment liquid. The fabric front uses polyester yarn, the middle uses wool yarn, and the inner lining uses nylon-spandex core-spun yarn. This structure helps to disperse and neutralize static electricity. The post-treatment liquid helps to form an antistatic layer on the fiber surface, which can effectively capture and disperse charges, reducing the accumulation of static electricity.

[0038] 2) The manufacturing process of this invention provides the fabric with strength and abrasion resistance by combining polyester yarn, wool yarn, and nylon-spandex core-spun yarn. Polyester is widely used due to its high strength and abrasion resistance, while wool provides warmth and softness. The use of nylon-spandex core-spun yarn further improves the fabric's elasticity and resilience. This core-spun yarn is made by wrapping spandex fibers with nylon staple fibers, wherein a specific weight ratio of nylon staple fibers to spandex helps to enhance the fabric's abrasion resistance.

[0039] 3) The structural design and material selection of the fabric of this invention, such as the wool yarn in the middle layer, provide additional warmth. This fabric effectively retains body heat while remaining lightweight, providing excellent cold-weather insulation.

[0040] 4) This invention utilizes a unique treatment solution formula to achieve a stable chemical bond with the fiber surface, forming a flexible and durable protective film. This film effectively reduces direct wear on the fibers during friction, significantly improving the overall abrasion resistance and durability of the fabric, thereby extending the service life of the garment.

[0041] 5) The active components in the treatment liquid of this invention can construct efficient charge dissipation channels on the surface of fabric fibers, and rapidly neutralize and disperse static charges generated by friction through moisture absorption and ion conduction. This characteristic gives the fabric excellent and long-lasting antistatic ability, effectively preventing static electricity adsorption and discomfort during wear. Detailed Implementation

[0042] Main source of materials:

[0043] The polyester yarn is commercially available, 75dtex / 100F, Thermolite brand hollow thermal polyester yarn. Thermolite polyester yarn is a new type of fiber launched by DuPont.

[0044] The nylon staple fiber is commercially available, with a thickness of 1.5D and a length of 38mm.

[0045] Hyperbranched polyester H30, module: multiarm alcohol, branching unit: 2,2-dimethylolpropionic acid (bis-MPA), Shanghai Huicheng Biotechnology Co., Ltd.

[0046] Silica, particle size: 20nm, purity: 99.9%, morphology: spherical, color: white.

[0047] Titanium dioxide, crystal form: anatase, particle size: 3~5nm, BET: 150~200m² / g.

[0048] Benzyl di(2-hydroxyethyl)octadecenylammonium chloride, CAS No.: 67907-25-9.

[0049] All other raw materials used in the embodiments and comparative examples of this invention are commercially available products.

[0050] The design concept of this invention is to create a composite wool fabric that is both cold-resistant and warm, as well as possessing excellent abrasion resistance and antistatic properties. This is achieved by combining a specific structural design of polyester yarn, wool yarn, and nylon / spandex core-spun yarn, along with a specially prepared treatment solution, to enhance the fabric's physical properties and comfort. This treatment solution contains components such as hyperbranched polyester H30, benzyl di(2-hydroxyethyl)octadecenylammonium chloride, and vinyltris(2-methoxyethoxy)silane, which can form a protective layer on the fiber surface, effectively improving the fabric's abrasion resistance and antistatic properties while maintaining its warmth.

[0051] Example 1

[0052] The manufacturing process of a cold-resistant and warm composite wool fabric is as follows:

[0053] Step 1: The front of the fabric uses polyester yarn, with wool yarn in the middle. The wool yarn specification is 85 / 1Nm, and the average diameter of the wool fibers in the wool yarn is 16.5μm. The inside uses nylon-spandex core-spun yarn. The fabric is knitted on a single-jersey knitting machine with an 18-inch cylinder diameter, a needle pitch of 28 stitches per inch, and 8 stitches per loop. It is knitted on a seamless knitting machine with self-locking loops at the top and bottom. During knitting, there is one cycle of 8 stitches, with two types of yarn in each stitch. The fabric consists of polyester yarn + nylon-spandex core-spun yarn in sections 3, 5, and 7; wool yarn + nylon-spandex core-spun yarn in sections 2, 4, 6, and 8; and 210D spandex used for the waistband in sections 2 and 6. The weight ratio of the polyester yarn, wool yarn, nylon-spandex core-spun yarn, and 210D spandex for the waistband is 3:3:4:0.5. The nylon-spandex core-spun yarn is nylon staple fiber covered with 20D spandex, and the weight ratio of the nylon staple fiber to the spandex is 7:3. This mixture is woven into the fabric greige.

[0054] Step 2: Immerse the fabric prepared in Step 1 in a treatment solution at a liquor ratio of 1:30 g / mL at 40°C for 70 minutes. After immersion, subject the fabric to padding at 50°C and 2 MPa pressure for 5 minutes. After treatment, dry at 40°C to obtain a cold-resistant and warm composite wool fabric with a basis weight of 300 g / m². 2 .

[0055] The preparation method of the treatment solution is as follows:

[0056] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)ethylene oxide dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent.

[0057] S2. Mix 100g benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride, the treatment agent prepared in step S1, 40g 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g vinyltris(2-methoxyethoxy)silane, 2g silicon dioxide and 2g titanium dioxide added to 100g 70wt% ethanol aqueous solution and treated at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0058] Example 2

[0059] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the preparation method of the treatment liquid is different.

[0060] The preparation method of the treatment solution is as follows:

[0061] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of 2-[[3-(chlorodimethylsilyl)propoxy]methyl]ethylene oxide dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent.

[0062] S2. Mix 100g benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride, the treatment agent prepared in step S1, 40g 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g vinyltris(2-methoxyethoxy)silane, 2g silicon dioxide and 2g titanium dioxide added to 100g 70wt% ethanol aqueous solution and treated at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0063] Example 3

[0064] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the preparation method of the treatment liquid is different.

[0065] The preparation method of the treatment solution is as follows:

[0066] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of 2-(dichloromethyl)ethylene oxide dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent.

[0067] S2. Mix 100g benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride, the treatment agent prepared in step S1, 40g 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g vinyltris(2-methoxyethoxy)silane, 2g silicon dioxide and 2g titanium dioxide added to 100g 70wt% ethanol aqueous solution and treated at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0068] Example 4

[0069] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the preparation method of the treatment liquid is different.

[0070] The preparation method of the treatment solution is as follows:

[0071] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of methyl epichlorohydrin dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is complete, remove the solid by vacuum filtration to obtain the treatment agent.

[0072] S2. Mix 100g benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride, the treatment agent prepared in step S1, 40g 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g vinyltris(2-methoxyethoxy)silane, 2g silicon dioxide and 2g titanium dioxide added to 100g 70wt% ethanol aqueous solution and treated at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0073] Example 5

[0074] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the preparation method of the treatment liquid is different.

[0075] The preparation method of the treatment solution is as follows:

[0076] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)ethylene oxide dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent.

[0077] S2. Mix 100g benzylethyltrimethylammonium chloride, the treatment agent prepared in step S1, 40g 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g vinyltris(2-methoxyethoxy)silane, 2g silicon dioxide and 2g titanium dioxide added to 100g 70wt% ethanol aqueous solution and treated at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0078] Example 6

[0079] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the preparation method of the treatment liquid is different.

[0080] The preparation method of the treatment solution is as follows:

[0081] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)ethylene oxide dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent.

[0082] S2. Mix 100g of 3-phenoxybenzyltriethylammonium, the treatment agent prepared in step S1, 40g of 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g of ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g of vinyltris(2-methoxyethoxy)silane, 2g of silicon dioxide and 2g of titanium dioxide, into 100g of 70wt% ethanol aqueous solution and treat at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0083] Comparative Example 1

[0084] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the preparation method of the treatment liquid is different.

[0085] The preparation method of the treatment solution is as follows:

[0086] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of epichlorohydrin dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is complete, remove the solid by vacuum filtration to obtain the treatment agent.

[0087] S2. Mix 100g benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride, the treatment agent prepared in step S1, 40g 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g vinyltris(2-methoxyethoxy)silane, 2g silicon dioxide and 2g titanium dioxide added to 100g 70wt% ethanol aqueous solution and treated at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0088] Comparative Example 2

[0089] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the preparation method of the treatment liquid is different.

[0090] The preparation method of the treatment solution is as follows:

[0091] S1. Mix 4g of hyperbranched polyester H30 with 200g of ethyl acetate and stir for 30 minutes. Then add 20g of sodium hydroxide and continue stirring for 8 minutes. After that, add 50g of 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)ethylene oxide dropwise and treat at 50°C for 20 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent.

[0092] S2. Mix 100g benzyltriethylammonium chloride, the treatment agent prepared in step S1, 40g 2,3,3',4'-biphenyltetracarboxylic dianhydride and 300g ethyl acetate at 100°C for 5 hours. Then, add the treatment solution, which is 4g vinyltris(2-methoxyethoxy)silane, 2g silicon dioxide and 2g titanium dioxide added to 100g 70wt% ethanol aqueous solution and treated at 70°C for 2 hours. Continue stirring for 1 hour to finally obtain the modified solution.

[0093] Comparative Example 3

[0094] The manufacturing process of a cold-resistant and warm composite wool fabric is basically the same as that in Example 1, except that the treatment liquid is replaced with an equal amount of ethyl acetate.

[0095] Test Example 1

[0096] Abrasion resistance test

[0097] The composite wool fabrics prepared in the embodiments and comparative examples of the present invention were tested according to the national standard GB / T 21196.2-2007 "Textiles - Martindale Method for Determination of Abrasion Resistance of Fabrics - Part 2: Determination of Specimen Damage". The friction load was set to 800g, and friction was recorded until a hole appeared in the specimen. The value on the reading dial at this time was recorded, and the average value of 3 groups of specimens was taken as the number of abrasion cycles of the specimen. The specific test data are detailed in Table 1.

[0098] Table 1

[0099] Experimental protocol Wear resistance cycles / times Example 1 <![CDATA[6.41×10 4 ]]> Example 2 <![CDATA[6.20×10 4 <!-- 6 -->]]> Example 3 <![CDATA[5.86×10 4 ]]> Example 4 <![CDATA[5.69×10 4 ]]> Example 5 <![CDATA[6.03×10 4 ]]> Example 6 <![CDATA[6.01×10 4 ]]> Comparative Example 1 <![CDATA[5.76×10 4 ]]> Comparative Example 2 <![CDATA[5.96×10 4 ]]> Comparative Example 3 <![CDATA[4.86×10 4 ]]> .

[0100] Test Example 2

[0101] Antistatic performance test

[0102] According to standard GB / T 12703.2-2021 "Test Methods for Electrostatic Properties of Textiles - Part 2: Manual Friction Method", the surface charge density of the composite wool fabrics prepared in the examples and comparative examples was measured to characterize the antistatic effect. The smaller the surface charge density, the better the antistatic effect. The test results are shown in Table 2.

[0103] Table 2

[0104] Experimental protocol <![CDATA[Surface charge density (μC / m 2 )]]> Example 1 0.36 Example 2 0.43 Example 3 0.466 Example 4 0.51 Example 5 0.47 Example 6 0.52 Comparative Example 1 0.55 Comparative Example 2 0.42 Comparative Example 3 3.6 .

[0105] The data from test examples 1 and 2 show that the composite wool fabric prepared in Example 1 has the best abrasion resistance and the best antistatic properties.

[0106] This invention achieves antistatic effects through a specific fabric structure design and the preparation of a post-treatment solution. The fabric uses polyester yarn on the front, wool yarn in the middle, and nylon-spandex core-spun yarn in the lining. This structure helps disperse and neutralize static electricity. In the preparation of the post-treatment solution, the combination of hyperbranched polyester H30 and benzyl di(2-hydroxyethyl)octadecenylammonium chloride helps form an antistatic layer on the fabric surface. This layer effectively captures and disperses charges, reducing static accumulation. Furthermore, the addition of vinyltris(2-methoxyethoxy)silane, silica, and titanium dioxide may enhance the fabric's antistatic properties. Overall, this composite wool fabric achieves excellent antistatic effects through a combination of physical and chemical methods, allowing the fabric to quickly dissipate surface charges during wear, reducing the discomfort caused by static electricity.

[0107] The cold-resistant and warm-insulating composite wool fabric of this invention achieves excellent abrasion resistance through specific material selection and processing steps. The fabric combines polyester yarn, wool yarn, and nylon-spandex core-spun yarn; this combination provides the fabric with strength and abrasion resistance. Polyester is widely used due to its high strength and abrasion resistance, while wool provides warmth and softness. The use of nylon-spandex core-spun yarn further enhances the fabric's elasticity and resilience. This core-spun yarn is made by wrapping spandex fibers with nylon staple fibers, where a specific weight ratio of nylon staple fibers to spandex contributes to enhancing the fabric's abrasion resistance.

[0108] The 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)ethylene oxide used in Example 1 has a unique molecular structure compared to the epoxy compounds used in other examples and comparative examples, which may explain its superior abrasion resistance and antistatic properties. This epoxy compound contains a 4-chlorophenyl group and a 1-cyclopropylethyl group, a structure that provides strong intermolecular forces and good chemical stability. The introduction of the 4-chlorophenyl group increases the polarity of the molecule, contributing to improved compatibility with other components in the fabric, resulting in a more uniform and stable treatment layer on the fiber surface. Simultaneously, the presence of the cyclopropylethyl group provides a degree of flexibility to the molecule, which may contribute to improved abrasion resistance as it can absorb and disperse stress during friction, reducing fiber breakage. Furthermore, the steric hindrance effect of the cyclopropylethyl group may also contribute to improved antistatic properties as it can hinder the accumulation and propagation of charge. Therefore, this unique molecular structure makes the treatment solution in Example 1 more effective in improving the abrasion resistance and antistatic properties of the fabric.

[0109] The benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride used in Example 1 has a longer carbon chain and two hydroxyethyl side chains. This structure provides better softness and lubricity, helping to form a uniform and smooth protective layer on the fiber surface. The longer carbon chain increases the intermolecular interaction forces, enhancing the adhesion between the treatment liquid and the fiber, thereby improving abrasion resistance. Simultaneously, the two hydroxyethyl side chains can form hydrogen bonds with the fabric fibers, enhancing the fabric's antistatic properties because they can absorb and disperse charge, reducing static electricity buildup. In contrast, the benzyl ethyltrimethyl ammonium chloride in Example 5, the 3-phenoxybenzyltriethyl ammonium chloride in Example 6, and the benzyl triethyl ammonium chloride in Comparative Example 2 have simpler molecular structures and lack sufficient side chains or functional groups to form strong interactions with the fabric fibers. Therefore, their abrasion resistance and antistatic properties are inferior to those of the benzyl di(2-hydroxyethyl)octadecenyl ammonium chloride in Example 1.

Claims

1. A manufacturing process for a cold-resistant and warm composite wool fabric, characterized in that, The manufacturing process is as follows: Step 1: The front of the fabric is made of polyester yarn, the middle is wool yarn, and the inside is nylon-spandex core-spun yarn. The fabric is knitted on a single-jersey knitting machine with a cylinder diameter of 13-20 inches, a needle pitch of 28 stitches per inch, and 8 rows of feed lines. It is knitted on a seamless knitting machine with self-locking seams at the top and bottom. During knitting, there is a cycle of 8 rows, with two types of yarn in each row. Rows 1, 3, 5, and 7 are made of polyester yarn + nylon-spandex core-spun yarn, while rows 2, 4, 6, and 8 are made of wool yarn + nylon-spandex core-spun yarn. Rows 2 and 6 are made of 180-240D spandex for the waistband. The fabric is then woven into a greige fabric. Step 2: Immerse the fabric prepared in Step 1 in the treatment solution. After immersion, roll the fabric for treatment. After treatment, dry it at 35~45℃ to obtain a cold-resistant and warm composite wool fabric. The preparation method of the treatment solution is as follows, in parts by weight: S1. Mix 3-5 parts of hyperbranched polyester H30 with 150-250 parts of ethyl acetate and stir for 20-40 minutes. Then add 15-25 parts of sodium hydroxide and continue stirring for 5-10 minutes. After that, add 40-60 parts of epoxy compound dropwise and treat at 40-60°C for 10-30 hours under nitrogen protection. After the reaction is completed, remove the solid by vacuum filtration to obtain the treatment agent. S2. Mix 80-120 parts of ammonium salt, the treatment agent prepared in step S1, 30-50 parts of 2,3,3',4'-biphenyltetracarboxylic dianhydride and 200-400 parts of ethyl acetate at 80-120°C for 4-6 hours. Then, add a treatment solution, which is 3-5 parts of vinyltris(2-methoxyethoxy)silane, 1-3 parts of silicon dioxide and 1-3 parts of titanium dioxide, into 80-120 parts of 65-75 wt% ethanol aqueous solution and treat at 60-80°C for 1-3 hours. Continue stirring for 0.5-2 hours to finally obtain the modified solution. The epoxy compound is 2-(4-chlorophenyl)-2-(1-cyclopropylethyl)epoxyethylene; the ammonium salt is benzyl di(2-hydroxyethyl)octadecenylammonium chloride.

2. The manufacturing process of the cold-resistant and warm-keeping composite wool fabric as described in claim 1, characterized in that, The wool yarn has a specification of 80~90 / 1Nm, and the average diameter of the wool fibers in the wool yarn is 15~18μm.

3. The manufacturing process of the cold-resistant and warm-keeping composite wool fabric as described in claim 1, characterized in that, The weight ratio of the polyester yarn, wool yarn, nylon-spandex core-spun yarn, and 180-240D spandex for waist circumference is 2-4:2-4:3-5:0.4-0.

6.

4. The manufacturing process of the cold-resistant and warm-keeping composite wool fabric as described in claim 1 or 3, characterized in that, The nylon-spandex core-spun yarn is nylon short fibers covering 15~25D spandex, and the weight ratio of the nylon short fibers to the spandex is 6~8:2~4.

5. The manufacturing process of the cold-resistant and warm-keeping composite wool fabric as described in claim 1, characterized in that, The impregnation process involves immersing the fabric prepared in step 1 in a treatment solution at a bath ratio of 1:20~40g / mL at 35~45℃ for 60~80 minutes.

6. The manufacturing process of the cold-resistant and warm-keeping composite wool fabric as described in claim 1, characterized in that, The padding process involves padding the fabric at 40-60°C and 1-3 MPa for 3-8 minutes.

7. The manufacturing process of the cold-resistant and warm-keeping composite wool fabric as described in claim 1, characterized in that, The composite wool fabric has a weight of 280~320g / m². 2 .

8. A cold-resistant and warm composite wool fabric, characterized in that, It is prepared using the manufacturing process described in any one of claims 1 to 7.